Thirsty plant!

Hello!
My plants are so thirsty, i need to water them every 38 - 48 h.
I grow indica plants whit 400 w HPS in a grow tent, 30% humidity.
They are in 1 week into flowering in 3 gallon pots, i water 4 plants whit 0.5 gallon of water, 1 time nutrients and 1 time just water and then nutrients again.

Is this normal? need i to give them more water?

Very thankful for answers!

sounds about right...... prolly too often w the food....

No that's normal for a healthy flowering plant, use hydro nutes every watering and drench the soil until runoff.

okey, fine thing that cannabis are a strong plant, thanks for answers !!